Before the advent of the surgical microscope, surgery for an acoustic neuroma was limited to removing the tumor, which often resulted in hearing loss or facial paralysis since it was impossible to separate the tumor from the cranial nerve. With the introduction of the surgical microscope and endoscope, it became possible to remove or reduce the size of an acoustic neuroma while preserving the facial nerve. Today, with advanced microsurgery and stereotactic radiosurgery techniques, it has become increasingly possible to remove or reduce an acoustic neuroma while preserving facial movement, hearing, and other functions.
Microsurgery: Surgery is the preferred treatment for most acoustic neuromas since it offers excellent odds of functional preservation with long-term results. Surgery can be used on a tumor of any size, and often becomes the only option for larger tumors that are pressing on critical structures. The surgery to remove an acoustic neuroma is extremely delicate and may take several hours, or even all day, to complete. The neurosurgeon will choose from several possible approaches; the choice of approach depends on the size of the tumor, the risk of damage from the tumor pressing on critical structures, and the age and health of the patient. Approaches have different rates of preservation of hearing and facial function, and are chosen based on the patient's existing level of functioning and surgical goals. Depending on the goals of surgery, your surgeon may decide to leave a small amount of tumor in order to preserve your nerve function in select cases. Residual tumor can be monitored, or treated with stereotactic radiosurgery.
Stereotactic Radiosurgery: Neurological surgeons can use stereotactic radiosurgery (highly targeted radiation beams directed at a tumor from multiple angles) to treat an acoustic neuroma in select cases, including for patients who may not be able to tolerate surgery, and those whose tumors are small. Radiosurgery is not an option for all tumors, and it may not treat some of the symptoms caused by the tumor; in carefully selected patients, however, radiosurgery can offer excellent results in terms of preventing tumor growth and preserving function. Radiosurgery is a rapidly developing technique requiring specially trained neurosurgeons using the most sophisticated equipment – such as the Gamma Knife and Novalis – that is usually only available in major medical centers. Treatment may be given in either a single session or in multiple lower-dose sessions (known as fractionated radiosurgery). Results are not immediate – the goal is to control growth of the tumor, or reduce it substantially, over a course of months or years.
More about the Acoustic Neuroma Program
The neurosurgeons at the Weill Cornell Brain and Spine Center are fortunate to be part of the NewYork-Presbyterian Hospital team, with access to world-class surgical facilities and stereotactic radiosurgery equipment. The 2019-2020 "America's Best Hospitals" ranking in US News and World Report placed NewYork-Presbyterian as the #1 hospital in New York, and our Neurology and Neurosurgery program ranks as the #1 program in New York. Together, the NewYork-Presbyterian/Weill Cornell Medicine team is the best choice for skull base surgery and the treatment of acoustic neuromas.
Reviewed by: Rupa Goplan Juthani, M.D.
Last reviewed/last updated: September 2020
Our Care Team
- Chairman and Neurosurgeon-in-Chief
- Margaret and Robert J. Hariri, MD ’87, PhD ’87 Professor of Neurological Surgery
- Vice Provost of Business Affairs and Integration
- Assistant Professor of Neurological Surgery
- Leon Levy Research Fellow
- Feil Family Brain and Mind Research Institute
- Director, Neurosurgical Radiosurgery
- Associate Professor of Clinical Neurological Surgery
- Robert G. Schwager, MD ’67 Education Scholar, Cornell University
- Chief of Neurological Surgery, NewYork-Presbyterian Queens
- Chief of Neurological Surgery, NewYork-Presbyterian Brooklyn Methodist
- Alvina and Willis Murphy Associate Professor, Neurological Surgery
- Director, Brain Metastases Program
- Co-director, William Rhodes and Louise Tilzer-Rhodes Center for Glioblastoma